Question: 4. (8 points) Let X={1,2,3},Y={1,2,3,4},Z={1,2} (a) Define a function f:XY that is one-to-one. (no justification necessary) (b) Define a function g:XZ that is onto. (no

4. (8 points) Let X={1,2,3},Y={1,2,3,4},Z={1,2} (a) Define a function f:XY that

4. (8 points) Let X={1,2,3},Y={1,2,3,4},Z={1,2} (a) Define a function f:XY that is one-to-one. (no justification necessary) (b) Define a function g:XZ that is onto. (no justification necessary) (c) Define a function h:XX that is not onto and not one-to-one. (no justification necessary) (d) Define functions f1:YZ and f2:XY such that f1f2:XZ is onto. (no justification necessary)

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